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aphids in Medical News

How social insects recognize dead nestmates

... research this next." He added that dolichodal, iridomyrmecin, or similar compounds are found also in other insects, such as thrips, stick insects, aphids and rove beetles. "Understanding the exact mechanism of ant necrophoresis will help researchers develop a more environmentally friendly pest manage...
aphids in Biological News

Transgenic maize is more susceptible to aphids

The environmental consequences of transgenic crops are the focus of numerous investigations, such as the one published in the journal PloS ONE, which was carried out by Cristina Faria and her colleagues, under the supervision of Ted Turlings, professor in chemical ecology at the University of Neuc...

Alarm pheromone causes aphids to sprout wings

Chemical communication within insect species is often much more sophisticated than expected. When aphids are attacked by predators such as ladybird beetles, they release an alarm pheromone, (E)-â-farnesene, that has long been known to cause other aphids to walk around or drop from the plant. In a...

Sustainable agriculture at the ESA Annual Meeting

... increased, so did the numbers of natural enemies in the croplands. Chaplin-Kramer shows that increases in predators didn't always result in fewer aphids in the croplands, but she points out that agents of control are only half of the equation and sources of the pests themselves must also be considered....

Study predicts when invasive species can travel more readily by air

...st Service, reported that infested fruit, mainly from the tropics, was the most commonly intercepted commodity, and that flies, cicadas, planthoppers, aphids and scale insects were the most commonly intercepted invasive insects. Liebhold said Tatem's study provided fascinating predictions about expected...

Grazing animals help spread plant disease

... The grazers did not directly spread the plant virus, researchers said. Rather, they increased the amounts of annual grasses that are preferred by the aphids which play a role in transmission of this viral plant disease. That allowed for a much greater prevalence of the virus in areas where grazing took pla...

Aphids are sentinels of climate change

... aphids are emerging as sentinels of climate change, resea...esearch have shown. One of the UK's most damaging aphids the peach-potato aphid (Myzus persicae) has been...ency of mild winters. As a direct result of this, aphids seeking new sources of food are appearing signific...

Eat up all of your Brussels sprouts -- unless you're an aphid

... aphids that eat Brussels sprouts are smaller than normal ...f agricultural pests. The scientists compared aphids living on sprouts to aphids living on wild cabbages in a field experiment whic...

'Jekyll and Hyde' bacteria offer pest control clue

... While studying interactions between black bean aphids and their associated bacteria, York researchers di...hey dubbed Jekyll and Hyde bacteria. Black bean aphids can live on a number of different plant species. I...ety B, may point the way to new methods to control aphids and other insect pests. Professor Angela Dougl...

Ant invaders eat the natives, then move down the food chain

...ey began foraging lower on the food chain. Field studies showed that the ants were taking over an important food source: the honeydew excretions of aphids and scale insects that feed on plants. These are really important, often fixed resources, from which ants can get a huge amount of their carbohydra...

Study links success of invasive Argentine ants to diet shifts

...as they begin feeding on the honeydew nectar from aphids and scales. Insights into the ants food sources...ctar is essentially digested plant sap excreted by aphids and scales, said Holway. If youve ever parked your...eld covered with sticky stuff, thats honeydew from aphids or scales. The change in the ants diet not only...
aphids in Biological Technology

Pioneer(R) Brand Soybeans From DuPont Deliver Step-Change in Soybean Yields

...ematode, Phytophthora root rot and brown stem rot. Recently, Pioneer announced that it has also identified new markers for Asian soybean rust, soybean aphids and frogeye leaf spot. "The Y Series generation of Pioneer soybean varieties represents the combination of all of our industry-leading soybean resea...
aphids in Biological Definition

Endosymbiont

...e pests or carriers of human disease. For example aphids are crop pests and the tsetse fly carries the orga...12415315&dopt=Abstract A review article on aphids and their bacterial endosymbionts. A. E. Douglas ...tional interactions in insect-microbial symbioses: aphids and Their Symbiotic Bacteria Buchnera , Annual R...

Endosymbiont

...e pests or carriers of human disease. For example aphids are crop pests and the tsetse fly carries the orga...12415315&dopt=Abstract A review article on aphids and their bacterial endosymbionts. A. E. Douglas ...tional interactions in insect-microbial symbioses: aphids and Their Symbiotic Bacteria Buchnera , Annual R...

Parthenogenesis

...t fertilization by a male . Parthenogenesis occurs naturally in some lower plants (called agamospermy ), invertebrates (e.g. water fleas , aphids ) and some vertebrates (e.g. lizards , salamanders , some fish , and even turkeys ). Parthenogenetic populations are typically all-female. As wi...
aphids in Biological Dictionary

Tobacco mosaic virus

...ritannica. Assorted References agent of infection ( in plant virus ) ...of ways, the most important of which is through insect bites, primarily by aphids and plant hoppers. One of the most well-studied viruses, tobacco mosaic virus (TMV), is spread mechanically by abrasion... Tobacco mosaic ...

Parthenogenesis

...esis - Definition of Parthenogenesis at Dictionary.com a free online ... aphids and certain other insects can reproduce by parthenogenesis . ... Get in...rthenogenesis . parthenogenesis synonyms, parthenogenesis antonyms. ... aphids and certain other insects can reproduce by parthenogenesis . ... Politi...

Endemism

...com ... posted to surrogate relation endemism biodiversity by liucun on 2009-01-08 01:22: ... Areas of endemism and patterns of diversity for aphids of the Qinghai-Tibetan ... Britannica online encyclopedia article on endemism (biology), A taxon whose distribution is confined to a given area...
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